Torque converter shutter

[svxcuseme]

Hello all. This is my second post thus far. I just recently purchased my 4th Sub, 92 SVX LSL Black, 115K. I'm in Atlanta but flew up to DC for this one and drove it home. What a cool car!

After 2 1/2 weeks in my garage, I replaced the high-pressure PS hose, A/C temp? sensor (post dryer), drivers side CV boots, passenger rear wheel bearing, and installed a BMM-70268 trans cooler in front of the A/C condenser. The car is perfect !!! Thanks for all the great postings. They were very helpful.

My question is ...
I've noticed that the torque converter shutters and has some difficulty disengaging going uphill at around 2000 rpm's. I've read a couple postings of folks with similar issues.

This happened before adding the trans cooler. This is not a transmission mount problem. If I give it more gas then I'd like, I can get the TC to unlock, shift into 4th, and continue on my merry way. I'm using the car as a daily driver and don't really want to accelerate hard every time the TC has issues.

Is there anyway to remedy this problem, fluid, adjustment, or otherwise. I'm planning on changing the trans fluid this week so I'll see if that helps? Any others that fixed this issue?