Hi All,

In need of some advice. Recently purchased the above car, before I did the AWD wasn't working, so the old owner and myself decided a 50/50 split on a replacement gearbox would be the best option. After a while to wait due to the wrong gearbox being sent, it was all working well, it drives fine, however, day 2 I've noticed a clunk/knocking when changing down to 2nd gear from 3rd. I also noticed the same noise on the way home from work down from 4th to 3rd. It's very intermittent. Sometimes it doesn't knock going down from 3rd to 2nd, but other times it does. It's a short sharp knock, like a ratio is wrong or a diff issue. The replacement gearbox was 43k and I have no idea what testing the breakers give them but apparently it was fine. It's a rare one , 6 speed manual with 3 sensors. Took forever and a day to find the right one. After much expense I'm really hoping it's not the gearbox. The original is in my workshop with a seized output spline , hence the replacement. Not sure if I should refurbish that if it comes to it - depending on internal damage. Though guessing there is either an issue with the replacement gearbox - hence the reason it was scrapped, or issue with replacing it and causing another problem with the car. Otherwise drives fine, but I guess this knocking will get worse/louder in time. Sounds like popping a joint. I'm speaking to the mechanic who fitted tomorrow. Problem is, it's exhausted him as it caused so much grief, so essentially I'm the only one with the problem here. Owner is paid, mechanic is paid, I'll be the one losing out. 3 mo the warranty on gearbox, but no idea what that covers, I'm sure their ass is covered . Bought the car, 2 days of owning it, the saga continues. Any advice or ideas greatly appreciated

Thanks