Seems this is a common problem, I still havn't taken mine to the indi for a check up yet, (Stealership in Cyprus will break parts to give them something to fix, absolutely cowboy) due to time and money but will have no choice soon, (July), as the MOT is due and by parking/hand brake needs tightening up beforehand due to slight slippage.

possible solutions vary from transmission reset, transmission fluid, to transmission rebuild. No one really knows but you can be sure that many members here will post theier findings...

I have tried all the home fix's from the Transmission reset to disconnecting the Battery overnight, all did nothing to fix this problem...

Keep us posted...