How easy to adjust M41 trigger pull?

How easy is it for someone to adjust the trigger pull weight on a S&W Model 41?
I checked mine today and it won't quite pick up a 2# weight.

Any user-adjustable components?

Also, any way to make the thumb safety harder to engage. My fat paw keeps moving it just enough to cause issues.

Thanks for any suggestions!!

This should help with the trigger adjustment-

Model 41 maintenance (guntalk-online.com)

The steps after that are tricky... removing the coil spring on the trigger return, unwinding it to add tension and then getting it back in. Requires a dummy pin and some patience.