Just finished mine off and I must say it builds very well indeed

no trimming or shimming of parts anymore and it has been improved in all area's. Can't wait for the B5m to come out as that should be a big step up from the C4.2 in terms of build quality.
Only parts added (apart from stainless screws and some blue nuts

) are the J Concepts Fin turnbuckles and some alloy hex's. Only other addition I will add is the alloy front hinge pin brace.
Excuse the shell it's only a temporary one until I can get one pro painted....