Gear box mount help

Evening people

Finally got round to fitting my new upper gear box mount all was going fine. Got the airbox and battery out then came the problem I couldn't get the spanner round one of the bolts on the side of the chassis all the others came off fine but the one nearest the passenger is proving tricky Any one have any tips or what did you use ?

Thanks in advance

Edited 20 December, 201411 yr by vrsmucho