Took back. Shop replaced the solenoid pack again after the rebuild. Also found a short in the wiring from the computer and fixed (internal pressure was intermittently increasing). Put back together. Still bangs too hard while manually shifting from park to drive or back again but not all the time. Seems ok when first starting but gets worse when the engine/tranny warms up. Shop is disconnecting the drive shaft today to see if the hard shift is still present. Otherwise, ran well when shifting automatically. The shop is continuing to look at issues (ie second bad solenoid block). Any ideas? Thanks.