u/Taaacooo

Im casting resin 3d prints for first time and im wondering about propper sprue placement on this ring, is there something that should be changed about sprues?

Im using Liqcreate Wax castable resin.

Ive recently got this Minolta that i realy wanted to get for long time for its features and got nice deal on it.
Only issue is that it came with problem with firing. Only mechanical settings work and they are still wonky. When shooting with either B or O settings(doesnt matter which, both produce same results) the camera fires but only after(and sometimes) pressing film rewind button. 1) Cock shutter 2) press film rewind button 3) camera fires after pressing shutter release button but is inconsistent(sometimes the rewind button has to be tinkered with).
The camera was sold to me as non functional and seller said it could have capacitor problem which i suppose isnt the case since the camera is doing strange things in mechanical mode and electric speeds dont work at all.
Does anybody reading this have any idea what could be the cause of this? I am happy for any comments.