SoreQuads

Never knew that... Thanx for the tip. I'll try doing as you suggested.

The bolt was the 1st thing I checked, but there's still a slight play. When I'm riding on a rough road surface, I can sometimes hear rattling sound.

Ah! Appologies for that. Comes from doing too many things at once.

I'm currently riding a Scott S20 and finding that there's a slight play in my head tube. Could it be wearing out?