Hi Mark,looking good.You may want to cut the lip all the way back on the nose gear opening,as I couldn't get my gear doors to fit properly until I did.I then used poly ply to re make the lip,this is after spending ages messing around convincing myself that that was as good as they were going to be.When I cut the lip back and used poly ply they fitted really well.
Regarding cutting the fuse ,try using a scalpel,scoring numerous times,then sand it lightly size,when you have it the right size wick some thin cyano into the edge,let it dry and resand with180grit. You may need to re wick and go to 240 grit ,a pain in the arse ,but the only way I could get a clean edge.Hope this helpsand good luck if you try to make the canopy open!! It took me ages to get that right! regards Jon.