Muzzleloader nipple question.

[stephenprops1]

So I've been experiencing misfires with my sidelocks. I suspect I'm not getting clean ignition from the cap to the powder.
I'm using traditions nipples, pyrodex P powder and CCI m #11 caps.
I can get it to pop on 2-3 trys or I can unscrew the cone and shoot a couple g of 4f under the nipple and it fires every time.

Is there a commercially made nipple with larger touch hole?

Every time I clean my rifle, I remove the nipple and let it soak in my cleaning fluid. When the gun is cleaned, I then turn my attention to the nipple. I use pipe cleaners and a straight pin to ensure the nipple channel is free of any obstacle. I hold the nipple up to a light. When I can easily see thru the channel, I know it is clean.