Sloman - My carry rigs for the SP101 are; IWB - Tucker "Heritage" (very covert & comfortable) & OWB - Uncle Mikes "Sidekick" Professional (ambi for possible left hip back-up gun carry, also excellent protection/retention for woods & trail use). The Sidekick is a fine general-use holster as long as your SP101 isn't a hammerless model & you READ THE DIRECTIONS to ADJUST the thumb-break properly. It only costs around $29 and I've been pleasantly surprised how well it performs. I usually don't go for "cost effective" holsters.
Leagonnaire - Those ARE the tuning directions I followed. Pay particular attention to the suggestions about the plastic bag disassembly tricks. They REALLY saved my bacon three (3!) times during the process. I must admit I didn't follow them EXACTLY to the letter. For example, #14 says just to twist the appropriately sized drill bit to remove burrs inside the plunger hole. I additionally polished the I/D of that hole until the plunger traveled through there VERY smoothly. As a longtime gun tinkerer I recognised that as a critical spot in the trigger assembly design. A little extra time & effort there is very well-rewarded upon completion.
Don't anyone be shy about your ability to reassemble the SP101. TAKE YOUR TIME, use a light touch, don't get mad or impatient (set it aside for a few minutes if you recognise tension developing), turn OFF the TV/cell phone/etc., tell everyone in the household that you're going to need 2-3 hours of uninterupted time. It's somewhat daunting to quietly, methodically take on a new, complex task but the results are SOOOOO rewarding when you ask your gun buddies to try dry-firing your revolver. They all say the same thing and ask the same question, "Wow! Who DID that?". Hehehe...ME!