Hello. Introducing myself. New to all this here. Usually pretty mechanically inclined and have been wanting to get a Puch Maxi since I was a kid. Looking to make all my dreams come true and maybe picking up some bins of parts perhaps tomorrow. The seller just made me aware that there is a glob of JB weld on the bottom of the case of what he says is a 77 E50 but I am having troubles identifying from the pictures as there seems to be one more screw then most I've seen. Ive added a picture. Also curious what is too high to pay for a "complete" non-running 77 Maxi. Trying to educate myself on prices but some seem to be all over the place. Any help is greatly appreciated.