I was just going to say... the experience I had with wetside Maintenance on Vortechs was it was almost always the ceramic washer that had to be replaced (because it no longer seated in the inside base properly) or the inside base itself (which would crack / chip and then the washer would not seat properly)... neither of which comes in the $20 kit ... the washer was another $18 by itself, and the base part was (I think) $20 by itself.

 

If that ceramic washer is not seated flush in the base shaft hole - or the base shaft hole is worn to the point where the ceramic washer can work loose... then the entire magnet inside the wetside will contact the base cover and scrape against it, eventually stopping the shaft from spinning and possibly damaging the magnet  itself.

 

I was replacing ceramic washers yearly, and base covers every 2 years... the only pieces I ever actually used from their "Maintenance Kit" were the tiny see - through washers that insulate the shaft from the ceramic washer - because I would replace them whenever I repleced a ceramic washer.

 

But IMO the $20 -$40 yearly expense was just another thing I left behind when I switched to the Jebao pumps  that, and the motor whine...

 

 

That kit doesn't include a new ceramic washer, so if it has become one with the plastic drive shaft like mine did, make sure you order that too so you don't have to figure it out after waiting to get the kit and then have to wait for another part to show up like I did...

Also, aquariumspecialty.com had the cheapest shipping options

I have bought 2 used and I could tell the people put the whole wet side in a vinegar bath but didn't disassemble it and while it looked "clean" when I dissembled it according to the manufactures instructions I was amazed at how the unseen little gunk on the parts when taken apart were making it hard for that prop to spin freely.

Adam