Stop in for a cup of coffee

So coming back from restaurant Trans is acting up. Delayed up shifts. Has cheeta manual valve body. Alwas snapped in to gear. Now a very noticeable lag. Engine revs up between shifts. Fluid us full and red...any ideas?
Blocked filter? or maybe pump?
Call T/A in the AM. Their MVB, they ought to know what can cause that. I've only used 727s that actuate the throttle pressure lever