Use Goo-gone if you have sticky residue.

Lawn tractors don't usually have more than 2 cylinders. Are you putting 2 on one side, 1 on each? I think it's a fun idea.

When I quit autocrossing, I put my number magnets on my tractor. Neighbor kids thought the #20 tractor next door was funny...

 

Not Harley Earl; Harlow Curtice. GoOgle tells me Road master had 4 all others had 3. 1949 they were real holes. It all started with the chief designer putting lights wired to the distributor on his 1948 Roadmaster to look like fighter plane exhaust to accent the gun site hood ornament

 

I’m incorrect the ventiports are explained here

https://en.wikipedia.org/wiki/Buick_Roadmaster

 

Speed- I'd lose them, I use fishing line, but the dental floss sounds like a good option..

Roadmaster always had 4 ports that functioned.. Below that level could come with 3 IIRC.

Lawn tractor is great place for them.. I have chrome lug nut covers on my Toro Zero Turn mower.

 

I am with everyone else, I don't like 'em

 

Dental floss (unwaxed!) and GooGone.
Works on badges of all kinds.

I have also used a heat gun and the above two.