70261443 Deep Shift Rail, 4th Gear

I'm elbow deep in rebuilding a transmission for my 180 and my AGCO dealer tells me that the late model 185 shifter rail to fix 4th gear jump out is now obsolete.  The 70261385 fork is still available at $300.96.  Unless I can find the updated rail, I guess I'll have to make my own or modify my old rail.  Does anybody know of a source for the 70261443 shift rail?

According to AGCO parts find a 180 serial #12723 and up at salvage yard and it should have the updated shaft

Bobs number is 360 398 2141 or  360 961 2524 cell

We do several a year.  Move the detent slots, you can braze up the wear on the fork. AFTER the trans is assembled with new gears and shifter collar and you are positive the pinion brg is tight with proper rolling torque, and there is ZERO play behind the snap ring that hold the gear stack tight,  then shift the gears into 4th and 3d and in each gear pull hard on the shifter and see if you feel a 'pop' where it is coming out of detent and shifting deeper into gear - if so (and 90% will)  move the slot in the rail as necessary to allow total shift in. Be careful about cutting the detent slot much deeper than stock as if it ever does jump out it could break the fork. USe the detent ball as a template. Sometimes we weld up behind the detent's old slot.  Grind a 45 degree angle on the end of the 3/4 shifter rod to make it easier to put the detent ball back in. IF you have never taken on apart you will find a shop rag draped over the assy will eliminate an hour searching for the weaponized flying ball. IF you do it right you should never have to do it again - and if someone else gets on the tractor and grinds the gears and you witness it - you will probably go to jail :-)  - ((look on the bright side - today you will serve no time!))