moskit exhausts in 1/48 - problems?

just had some of these delivered and they look awesome.

however, on trying to slot them in to my tamiya me109e, i find that they will not fit, being a)too thick b) the front of the exhaust manifold is solid with tamiya and has to be hollowed out.

i am not sure if rectifying this situation is possible given that the kit is fully made up and fully painted.

given that it has a mottle job i’m v proud of, i’m even more annoyed!

any suggestions?

has anyone had similar problems?

is this the case with all moskit products?

rgds,

Nicholas