RHS heads with 1.44" O.D. valvespring?

Has anybody had their RHS spring pad's cut for a 1.44" O.D. valve spring? Did you have any issues with the springs or retainers contacting the rocker arms?

Wanting to open up my RHS heads from the 1.3" pad to a 1.45" for wider variety in spring options and cheaper price, but im not sure if my Hughes 1.6 shaft mount rocker arms will clear the retainer or spring. If anybody has any experience with this and is willing to share it would be greatly appreciated!