Hello,
I think CMP Models are like all other ARF's.
Some kits are good and some kits are bad, all of them are very low costs.
I have a 140er P51, which is good to built and flies very good.
Also a 120er Zero, which have a wrong C.G. from manual instruction.
A Macchi 200 Saetta ( airkill 90 ), I think she is also from CMP, with no given C.G. point.