Engine replacement

[Cueto65]

Hi all!! I've recently been in the process of a full strip down and rebuild of my nc35,on the weekend I replaced engine back in frame,and low and behold I've got a spare bolt and I can't seem to find out where it goes on the left handside we have an upper and lower front frame mounting point,and also have a rear mounting point through the frame.on the right handside we have a upper and lower front mounting point and to the rear lower frame/engine long bolt and nut.where there is an lock ring and adjuster that mounts against the rear cylinder on right,does the bolt go in there? As I have tried it and it doesn't seem long enough and won't sit inside the adjuster ring.
Anyone have any suggestions? Cheers :-))

[skinnydog0_0]

Can you post a pic of the bolt you have, should be able to identify it.
Cheers