making moulding using h and r

[johnnyb]

I've been making a large pine moulding for an arts and crafts exterior. I roughed it using a dado head and set about with an 18 hollow and round. I've made about 15ft of altogether. I had no issue with the hollow or the round ( these are trickier to sharpen and use) but the round often scratched the hollow. ( the mould was an s shape)
how do people eliminate this.?
I really got much better at the moulding and the planes performed well( I even made a plane for the small lambs tongue using a knackered 18th c moulding plane.) just that place where the large hollow and round meet caused me mischief.

 

[johnnyb]

I may modify a 18 round to better cope with that transition. ie remove the hook slightly. I seem to have loads of 18 plane as they mostly survive unused!