Thanks for the comments. If you ever come across a piston issue or need parts for our transmissions, give me a call. We use to use the stock 4th gear cast piston, we have found they are common to break even on a stock trans with higher miles. The stock part is cast and weak, adding higher line pressure does shatter those stock parts. We have been making billet CNC machined ones for the past several years that we install in our upgrades. If you ever find a broken one I can offer you the Billet replacement. If it is one of our older transmission that did not have the billet one, It would be free. We make better 2 piece 2nd gear pistons also, but I have never seen one of those break. We make the second gear custom to add more apply area. Thanks again! Greg
