Well, I didn't take 30 years off, but more like 20. that said, I had similar problems. It's true what the others are saying, it's mostly getting your "old" coordination back. I worked pretty hard at it for a year, and now I play better than ever! But (you are going to hate this because it's tedious and boring) GO SLOW - so slow, in fact, that you will wonder if you are really doing any good. Get out a metronome (get a digital one, not one of those old fashioned ones - mine had a "limp" - so does my teacher's, which sort of cracks me up - defeating the whole purpose of a metronome and all - but I digress) and work just the triplets with one hand till they are all even and perfect at a very slow speed. Then slowly (over weeks, probably) speed up a notch at a time). You'll be amazed how the old coordination will come back!