I changed d gearbox just dis February n spending like 100k. Since last week after a cold start in d monin d gear will not engage immediately (it takes about 10 seconds before it wud engage after I pull d gear lever to drive n it slips again several times before I can drive d car). But I notice d gear engages immdiately n normally after d engine is hot. Pls help me. Thanks.

what gear fluid did u put into it?..i hope u put the correct one?
this is usually the symptom if u put the wrong fluid..the car drives normally when its hot n slips when its cold.
flush out the fluid asap and use the correct fluid

Ur gearbox is nt sitting well....I had same problem in my rover(although anada engine in it). Reverse was nt engaging sef.after I got the right sitting,its now normal.

Thanks alot