The thing is, other than a Colt you probably can't find a 1911 that's made closer to original GI dimensions than a Para GI Expert. Yes, I hate that hammer, too -- so I replaced mine with a faux GI wide-spur hammer. The GI Experts, unlike all other Paras, don't use a ramped barrel, they use a ramped frame. Mine feeds everything I throw at it, and I haven't tinkered or polished or anything.
IMHO the GI Expert is one of the true bargains in a 1911. YMMV.