Yea I know what you mean. I have a leaking 5-speed(input shaft seal housing). I pulled my 5-speed 6 times in 3 weeks and still couldn't stop the leak. I hate Gear Oil I have (4) 4-speeds in the garage that I can't use because the 86 tunnel is to narrow to house the 4-speed. It's good to see you guys embracing the 4-speed. I never imagined going back to the 5-speed, but I just couldn't resist owning an 86 with 64k miles(now 93k due to daily driver). BTW HI GUYS!!!!! I've been away for awhile doing secret service Quest mods......just kidding Actually, I went Hurricane4, EDIS, Megasquirt2 v3, then (2) broken and (1) 2" dia burnt pistons Seems like some of you guys have done the 4-speed mod with good results. Just remember to set your(2)Brake Bands(torque to 132 in/lb Caution!!! NOT FT/LB. after installing a modded C/B. I know it's been a long time since the mod release, but last week, I noticed an error in one of my diagrams. The placement of the Pressure Modifier Shim needs to be between the Spring and the Valve, not behind the Valve. It won't (if installed incorrect)cause any damage, just decrease shift firmness...regardless of 1,2 or 3 Stages. Anyway, I'll be around more often now, and be happy to help if I can, with any 4-Speed, MPI, Megasquirt2, or EDIS questions. Keep in mind, I'm not a 4-speed Guru, but I've learned somethings from Shelby and NOTAV6. KEEP UP THE QUEST!!! AGC