More roof problems

[Peeege]

My earlier post was with rear section of roof which I now think is called the " 5th Bow " ( the section with the glass )  was struggling to close and clamp it now jam's on the lock mech ie the hook can't seem to enter the mech as if the mech is still in the locked position. I can only describe it as like a bonnet lock which has had the clasp thrown not allowing the hook to enter I have had 35 years plus in the bodywork trade so have a basic knowledge locks and catches I hasten to add all the operations opening and closing are fine just the last bit with the clamp, I have now removed the hook to enable the section to close but now obviously not secured and warning light now on,  any suggestions would be gratefully recieved ...... thanks in advance.