On Sun, 3 Apr 2005 20:50:40 +0100, andrewpreece wrote:

... as a last resort you could manufacture a hollow cone out of
something suitable ( wood, foam ? ), and slide it flat end first
down the rods. The problem is getting it down to the flate plate,
though a torrent of water might push it along.
snip
Just a crackpot idea ...

Not that crackpot, it may just work. If you can get it down there
it'll certainly assist in aligning the disc within the pipe a lot
better than the "pull 'n twist, hope it climbs" method.

What ever it is made of needs to be pretty tough though, so a lump of
hard wood rather than soft.

--
Cheers
Dave. pam is missing e-mail