i had all the normal reasons to change the TCM so i did and now all FORWARD gears work great!!!! however my reverse grinds and doesnt engage. it did this with the old TCM also right before the swap out. its a horrible noise. i have tested all four solenids, both top and bottom pairs click. and click under pressure. i even put new cv axels in. could it just be a fluid problem with the syncros? or am i out for a new trans?