Cheers for the advice, car going in for a service on Tuesday so will ask them to change the tranny oil. Ran the transmission diagnostics, electrics are all fine. Hopefully they find nothing in the existing oil. Transmission oil levels are a little low, but rather than topping it up going for complete change with recommended fluids. Hopefully I will see a major improvement or my next few weekends will be extremely boring saving up for a new tranny.