Unless you have done this several times, I don't recommend you dis-assemble the cross-bolt safety from the trigger housing group. Instead just soak the entire group in A 50-50 mix of paint thinner and Kroil- brush and scrub out the crud and function the safety from On to Off positions as you do this- then a blast of dry compressed air should do the trick-- also, on your forearm comment, make sure the two point facing arrows (draw lines in WRA lexicon) face each other when you re-assemble the barrel magazine and action tube/rod assembly--
