235Daily Driver...thanks for the compliment! I got my 2 groove balancer from Steve at Buffalo Enterprises. It's a bit pricey but worth it! He recommends getting it rebalanced and using a sleeve on the seal surface. However, it's the best way to get that illusive "2nd groove".
I am running the adaptor plate water pump (the correct fix) and am running only ONE belt (alt)over the pump pulley. The A/C compressor runs off the front groove and is mounted low while the alt. is on the passenger's side.
I'm going to use the conventional alt. position on the driver's side to run in my fresh rebuild, then swap over at 500 miles when I add the a/c.
Hope this helps.
Dave