Heres what I would do. Take that bow and throw it in the trash and start over with a new one. You've lost faith in it and spent countless hours/years dicking around with it. Start fresh, renew your confidence.
Check out Artistic Visions Wildlife in PA. They are a good sized shop and do a wide variety of mounts! Never had them do a life size goat but they did my brown bear and a velvet caribou for me.
I thought I would make this post after running in circles the last few months trying to find out what was up with my 300RUM. I had previously been shooting the 180 gr ttsx and while accurate, I was not liking the looks of the recovered bullets and I wanted to step up to a heavier bullet. I...