Hello. If you're being bitten by the spur, I bob it at the second lateral serration, reshape, and refinish. If you have a factory BHP ball hammer, either the bottom half of the ring will need to be removed or greatly reshaped.
If the rear of the hammer spur or ball is the offender in the "bite" you mention, another solution is to install C & S's grand little abbreviated ball hammer. This has worked well for me.
If the web of skin between the thumb and trigger finger is being pinched because it's over the abbreviated tang common to HPs, Wickmann and Novak both offer a thinning process that greatly alleviates it. If your normal grip causes this, the above is about your only remedy unless you're willing to grip the gun too low for you.
The final option, in my view, is to have an extended beavertail tang added. This is costly and detracts from the gun's looks in my admittedly subjective opinion.