Well seeing as how I have one just like it I would NEVER do anything like that to it. I tell what is cool to do: take a Kirby Classic III and put a Tradition Bag and hadle on it and put the red trim and handle grip and cord on it and you have a Patriotic Kirby or a Louisiana Tech Kirby GO...
Get a Kirby G Series:
1) They're Self Propelled
2) They last forever
3) They're the best
4) They are EXTREMELY Versatile
5) They use 48% less energy than any other vacuum cleaner
6) They're filtration filters down to .001 Microns
I rest my case
-Adam Mercer
My Sentria doesn't do that because I swapped the transmission for that very same reason with a G4 transmission that I took out of my Diamond Edition. So maybe that's a thought. Good luck though
-Adam
This same thing happened to my grammy back in the eighties and she dreaded vacuuming each week because of that broken safety/speed selector switch. Especially when a tornado hit in 1984 and there were bits of glass no bigger than a dime! WHEW! I wasn't born until 1989 and she had already worn...
KirbyUltimateG
Rob, If you lower your brushroll all the way down it will restrict belt life, destroy the bearings in the brushroll, and wear the bristles down to a nub. That is all that can happen from this, period. Adam