Thanks for your comments
I wasn't sure about the tiller either, but then I made an "sandwitch" putting a photo from my bow and the picture for the ideal elliptical tiller (from Steve Gardner, red in the picture) in the TBB4 together and I thought "OK, its near enough". The bow is a little bit whip-tillered but he shoots very well without any noticeable handshock, so I decided to leave the bow this way.
… Does the bow have a built up riser?
The handle is glued
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