if at first you don't succeed, do it three times.
that's how my morning went.
Started off greasing the spindles, then put the new blades on
but the deck was so clogged with wet grass I couldn't leave it that way so made a big mess with that.
then took mower outside and degreased/cleaned/powerwashed the mower deck.
looking spiffy, blew it all off with air and decided to run the blades to dry everything out.
wack wack wack wack
sigh
I realize the new blades don't fit the same way, and took one off to compare with old one.
Aha, different size center hole, new one about 1/16 too small. So blade was not seating properly.
Ok, jack up the mower for second time and replace with spare set of sharpened blades.
take it outside to check and
wack wack wack wack
now I had lost my sense of humor.
went inside for some lunch to regain it, came back out,
jacked it up again, and
got it all installed properly and it ran fine.
had to be careful in jacking, tire kept trying to climb out, got it put back in where it belonged
sat outside for a few moments and watched stink bugs run along rv window.