Read this thread...ALL the way to the End.
How I adjusted the trigger on my Marlin 60 (Drawing) - RimfireCentral.com Forums
The reason I say all the way to the end, some Info has been UPDATED as to what works best and what didn't turn out so well over the years.
Best mods are changing certain springs & the 6/32" setscrew mod.
On the setscrew mod, you have to be VERY precise in where you drill yer hole in the trigger
One other great mod for YOU, grab a tennis ball & squeeze it in your spare time, or one of those handgrip thingy's like an Eagle Claw trainer or a squeezy grip to strengthen your fingers & grip.
The more power you have, the lighter the pull feels