My MkII, which is the stainless version of the OP's, has been a wonderfully fine pistol. I stumbled onto this thread after he had already "discovered" that he hadn't cleaned the thing, and it might be gummed up.. This is true about the Rugers. Mine can go 400-500 rounds without takedown/cleaning, but the bolt definitely starts getting sluggish.
Our oldest daughter had acquired her grandmother's Ruger, and asked me to look at it. I could barely get the bolt to cycle, and it would not fire at all. I tore it down, and spent about an hour soaking and brushing the parts to get the gummed up wax from the ammo out of all the nooks and crannies. The firing pin wouldn't even move. After re-assembly, the Ruger functioned/fired as if it was new.
They are "gunk sensitive"... as are many .22 rimfires.
Dis-assembly/assembly is a little more complex than other pistols, but it's not impossible. The biggest trick to learn is when putting the mainspring back in it, to turn it upside down so the hammer strut can swing down into position. If you don't, the strut will get caught and not engage the mainspring. No joy. Once you do it 5 or 6 times, it is no problem at all. I can probably get my MkII back together more quickly than I can an original 1911.
My stainless MkII is the one gun I will never sell. I've had it for over 30 years, and I hit what I aim at with it. I'd be scared to guess how many rounds I've fired through it, but it has to be close to 5000, very likely more. We used to buy bricks of MiniMags and go burn them up in a few outings. I replaced the black plastic grips with some I made from a piece of wood off a pallet... someone said it looked like pecan, or hickory. Those have been on the pistol for over 25 years, easily. A great old friend....