the Topeak Einstein pump I purchased came with 3 glueless patches. I've used the pump on several occasion and it works great however I haven't had the need (touch wood...)to use the patches yet. Does the inner tube have to be prepared as with normal patches or can the patch be applied directly to it without surface preparation? No sandpaper came with the patches so I am assuming that they can be stuck directly on.
What's the scoop???