@GriffLah
A bit of a pain to do but not to bad. The secret to success of the re-fit is to make sure all the old gluey gunk has been removed BEFORE applying new seals.
Here is a few photos to help you:
Remove old ones - a bit of heat helps.
Mask up your paint - very important so not to scratch the paintwork when removing the old gluey gunk as I used this to remove it:
Old gluey gunk coming out:
Clean up and slide in new seal:
These are the part numbers you need to order - buy from ebay and they can be had for half the price of RPD: