Thank you Pulp, i really need your suggestions, I hope to resolve easly the weight problem but depends a lot from the factory, isn't simple to carve inside the top, now I'm working on the plan designs to find the right way. I will also try to make two new tips, i will wait some pictures from you so I can draw better new ones. I've planned to maintain the same tip system for all the new tops, so will be easy to excange the tips from the various tops, and also buy different bodies to replace older or broken ones. The sticker and the poker buck are only aesthetic improvements, I can bet every good player can find better strings and holders than mine (I've tried with thicker strings and the top works a little beter).
I wait your video, I can't imagine how the top can work on good hands :-)
Bye, Maurizio
P.S. be free to mail me, i really appreciate your help