diff --git a/vtm/src/org/oscim/utils/pool/Inlist.java b/vtm/src/org/oscim/utils/pool/Inlist.java
index 68c55378..dd2096cb 100644
--- a/vtm/src/org/oscim/utils/pool/Inlist.java
+++ b/vtm/src/org/oscim/utils/pool/Inlist.java
@@ -51,7 +51,7 @@ public class Inlist<T extends Inlist<T>> {
 	 */
 	static <T extends Inlist<T>> int size(T list) {
 		int count = 0;
-		for (Inlist<T> l = list; l != null; l = l.next)
+		for (T l = list; l != null; l = l.next)
 			count++;
 		return count;
 	}
@@ -71,7 +71,7 @@ public class Inlist<T extends Inlist<T>> {
 			return head;
 		}
 
-		for (Inlist<T> prev = list, it = list.next; it != null; it = it.next) {
+		for (T prev = list, it = list.next; it != null; it = it.next) {
 			if (it == item) {
 				prev.next = item.next;
 				item.next = null;
@@ -121,8 +121,7 @@ public class Inlist<T extends Inlist<T>> {
 		if (list == null)
 			return item;
 
-		Inlist<T> it = list;
-
+		T it = list;
 		while (it.next != null)
 			it = it.next;
 
@@ -147,15 +146,14 @@ public class Inlist<T extends Inlist<T>> {
 		if (list == other)
 			return list;
 
-		Inlist<T> it = list;
-
-		while (it.next != null) {
-			if (it.next == other)
+		for (T it = list;; it = it.next) {
+			if (it.next == null) {
+				it.next = other;
+				break;
+			} else if (it.next == other) {
 				throw new IllegalArgumentException("'other' alreay in 'list'");
-
-			it = it.next;
+			}
 		}
-		it.next = other;
 
 		return list;
 	}
@@ -198,7 +196,7 @@ public class Inlist<T extends Inlist<T>> {
 			return item;
 		}
 
-		Inlist<T> it = list;
+		T it = list;
 
 		while (it != null && it.next != other)
 			it = it.next;
diff --git a/vtm/src/org/oscim/utils/pool/Pool.java b/vtm/src/org/oscim/utils/pool/Pool.java
index 480f93e1..cc84fa32 100644
--- a/vtm/src/org/oscim/utils/pool/Pool.java
+++ b/vtm/src/org/oscim/utils/pool/Pool.java
@@ -21,6 +21,8 @@ import javax.annotation.CheckReturnValue;
 public abstract class Pool<T extends Inlist<T>> {
 
 	protected T pool;
+	protected int limit;
+	protected int fill;
 
 	/**
 	 * @param item release resources
@@ -75,41 +77,20 @@ public abstract class Pool<T extends Inlist<T>> {
 		return null;
 	}
 
-	// remove 'item' from 'list' and add back to pool
+	/** remove 'item' from 'list' and add back to pool */
 	public T release(T list, T item) {
 		if (item == null)
 			return list;
 
 		clearItem(item);
 
-		if (item == list) {
-			T ret = item.next;
-
-			item.next = pool;
-			pool = item;
-
-			return ret;
-		}
-
-		for (T prev = list, it = list.next; it != null; it = it.next) {
-
-			if (it == item) {
-				prev.next = it.next;
-
-				item.next = pool;
-				pool = item;
-				break;
-			}
-			prev = it;
-		}
+		Inlist.remove(list, item);
 
 		return list;
 	}
 
-	protected abstract T createItem();
-
+	/** get an item from pool */
 	public T get() {
-
 		if (pool == null)
 			return createItem();
 
@@ -119,4 +100,6 @@ public abstract class Pool<T extends Inlist<T>> {
 		ret.next = null;
 		return ret;
 	}
+
+	protected abstract T createItem();
 }
diff --git a/vtm/src/org/oscim/utils/pool/SyncPool.java b/vtm/src/org/oscim/utils/pool/SyncPool.java
index 18b66999..fe8cd4f7 100644
--- a/vtm/src/org/oscim/utils/pool/SyncPool.java
+++ b/vtm/src/org/oscim/utils/pool/SyncPool.java
@@ -39,17 +39,21 @@ public abstract class SyncPool<T extends Inlist<T>> {
 	}
 
 	/**
+	 * To be implemented by subclass.
+	 * 
 	 * @param items
-	 *            number of initial items. NOTE: default does nothing!
+	 *            number of initial items
 	 */
 	public void init(int items) {
+		fill = 0;
+		pool = null;
 	}
 
 	/**
 	 * @param item
 	 *            set initial state
-	 * @return true when item should be added back to pool
-	 *         when returning false freeItem will not be called.
+	 * @return 'true' when item should be added back to pool,
+	 *         'false' when freeItem should be called.
 	 */
 	protected boolean clearItem(T item) {
 		return true;