do you think a shop would take in my t5 for rebuilding?

Ok heres my situation.

i bought my current t5 early this year. worked great and it has the D&D 2.95 gearset in it. i like the tranny.

but since i have bought it, the 4th gear has been grinding and recently my 5th gear retaining ring backed off.

i tore into it to find the problem which was the retaining ring. and went to put it back togehter and i cant get it back together. i have always had problems working with t5s. when i go to put the tailhousing on. it jams the shift rail too far foward and seems to lock up the t5 or some, everytime i have to rip the top cover off with all teh silicone i just layed down. i have done this NUMEROUS times. its a PITA and it pisses me off.

I should have taken it to a shop for fixing. since i am NOT GOOD with t5s, i just cant see to work with them, they piss me off.

as it sits.
i have the t5 with input shaft still on.

tail housing is off.
top cover is off.

do u think a shop would still take this in for a rebuild.

i dont want to deal with any mroe t5 problems. so i am willing to pay a little more and get a nice thorough rebuild and a nice t5 to drive on.

i had problems with my last t5 and i dont want to mess with them anymore.