Took my VX to the shop last week to have some seals replaced. Well they also flushed the trans. Now it's worse than before.

Ever since I bought the vehicross, it would have an issue that caused it to pop out of gear if I kept it around 25mph and didn't accelerate fast enough.

Got it back from the shop two days ago. Now if I accelerate too much in first, it'll slip badly then catch gear. I wish I had the tools and ability to swap out to a manual trans. I would do that in a heart beat. Should I just take the car to my local trans repair shop to have them diag it first before anything else? I'm pretty sure they're going to say it will need to be rebuilt.

I got a quote for a rebuild which was going to be around $2700 all said and done. But If I can get a manual trans/t-case in there for the same cost, I'd rather do that.