Thanks!!:

I have the door knob put into the swivel base - fits great. Need help getting sand off my platform so will have my first try out at the weekend. Will let you know what it's like. Should I definitely glue it in? And what is silicone grease? d'oh!
I was also going to say, you did a good job on the video you did for the door knob, did you edit that in Windows Movie Maker? Neat!
WMM won't import my camera files so trying another bit of software but struggling. Nice to be able to edit clips so I'm perservering!
cheers for now
Niki