Thanks David

The problem is this is a kit form P-51 and as I want to install the retracts in the wing before I sheet the wing there is no wheel well to measure against!!

So I`m not sure what to do!

Has anyone else had this problem?

Should I just go of the plans, although the plans have drawings that show 3/12 in wheels where I will be using 31/4 inch wheels

dutchy50</p>