Regarding the SP101, they are pretty stiff, shoot it and dry fire it a lot and it smooths out nice.
I made mine feel alot better by doing this and putting a 9 lb wolfe main spring in. Bought the spring kit from Brownells. No FTF at all w/ the lighter spring. I've heard bad things about changing the trigger return spring (think thats what its called) so I left that alone
"When the mind fails to comprehend, the body must be punished" -3rd Battalion,Parris Island