[TR] OD Transmission problem - suggestions?

[Rye Livingston]

My rebuilt engine, now with Hastings Rings, is running great.  This past weekend, the Triumph Travelers had a North County drive up around Sonoma, along the coast through Tamales Bay, Bodega Bay and all around.  440 miles over two days.

Now the problem
When I rebuilt the engine I also purchased an OD transmission and had it rebuilt.  I think I wrote about this before so I apologize, but I'm dropping off my car with British Motorsports later today, who rebuilt the transmission, and they are going to try and figure out the problem.

Since day one, it will shift into OD only when letting up on the gas or coasting.  If I'm accelerating it will not shift into OD until I let up on the gas.  Once in OD and am cruising along, especially in 2nd or 3rd gear, if I punch it, it will drop out of OD just like an automatic transmission.  Then when I let up, it will shift back into OD.  Obviously doing this under increased load or torque.  It will also do it in 4th gear, just not as easily.  , just not as easily.  When getting to a hill and I start to accelerate quite a bit, it will downshift out of OD.  Then crest the hill and let up, and it will shift back into OD.

A few weeks ago I dropped the car off with British Motorsports so they could diagnose the problem and the hydraulic pump is over 400psi, the clutch is not slipping, the solenoids are working fine.

I know there will be a lot of suggestions which I plan to forward the emails to them, and am hoping there will be something they haven't checked yet.

Thanks,

Rye

PS: For those of you who are at all curious, we had 16 Triumphs on the drive.  Here is a link to the photos I took.
https://share.shutterfly.com/share/received/welcome.sfly?fid=b94161b565006033&sid=0QaNmjFs2aMVFXs
 
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