The problem is mate, you have no training in hand skills of tools, repairs, maintenance practices, use of chemicals and other facets that others have recieved in formal training. Yes, I do believe your knowledge gained by flying training does raise you up from the absolute bottom of the pile, but not enough to complete with others. 24 is correct mind, if you don't ask, you won't know..
BTW, to work in a 145 MRO as a Connie, it is mandatory to have a valid Human Factors & Fuel Tank Safety level 2 certificate. And your own hand tools of a large range of AF spanners, sockets + associated equipment. Carrier bag carrying of tools isn't acceptable.