Nearly there!
Today I have mostly been getting on with it:
So, there was a big difference in the shape of the aftermarket clusters and the OEM lenses. You can see from this pic that there was a large amount of plastic sticking out from behind the lenses. Not a great pic, but you get the idea.
Out came the trusty Dremel and i cut them down to the same shape and size as the lenses:
After I had cut them to roughly the right shape and size, I went out into the cold and test fitted them. Shockingly, they fit perfectly, better than the aftermarket ones ever did. This was a huge relief - i can't tell you how good it felt!
Next, I went back inside and sanded the rough edges down and coated them with Isopon plastic bumper filler so I could get rid of the grooves left by the Dremel and minimise the sanding involved.
After it dried, I sanded the edges again to give a nice smooth finish. Actually the pics are fron during the smoothing process and I eventually got them a lot better than it looks in these pics:
Now that they were nice and smooth, they were still looking a bit ghetto, so I painted the outside edges of each cluster in black - actually I chose Outlaw Black, because that sounds much faster:
Once the paint dries, I will be bonding them to the lenses tomorrow and should hopefully get them on the car and working before I go back to work on Monday.
Thanks to everyone who has commented on here for giving me the motivation to keep going and get them finished.