golems when they are made are like any critter in that their skills vary.
now that said, the skills they have are directlly dependant upon the tinkers skill that made them.
so, if the tinker that made your golem as only at like 80-90 skill then there is a very high possibility that your golem has a tactics of like 40-50.
hence the reason you are not gaining.
like the mod there said.
get someone to lore it for you... but its not like it matters, cause if your not gaining then its definatlly not at the right level for you.
but you can go all the way to 120 with golems, and if you have golems that are spaced out right you can do it all the way from 0 to 120.
i keep a 50/50 and a 100/100 golem around for just such occasions.
if ya need a hand getting a high end golem drop me a line.
ill make ya one that will fit your needs.