Hello folks . Posted on here last fall about a 185 I bought with some issues which turned into bigger ones. Previous owner said transmission was rebuilt but first gear was somehow damaged during reinstall. Well first gear was never touched , it's in rough shape . 2,3 and 4 are new . It was also pushing oil from the torque tube into the transmission. I solved that by tying both reservoirs together with pipe thinking I could use it without first gear for now. Now it developed a loud knock in the rear of the transmission. Is there any way to diagnose without splitting ? Any thoughts as to why you would go 3 gears in and not replace all ? Any suggestions , opinions appreciated. I do have complete set of manuals. Thanks.