Good plan... I always keep an extra piston on hand when ramping just in case I go too far, they're cheap and easy to cut... Much cheaper and easier than the jug to buy and cut alike.
Very true..I got some of those drum sanders too and really like the way they work, even the older type rolls that go on those straight arbors work nice since they can flex some, but the sanders do make short work of putting just the right finish on the intake side and plenty smooth enough for the exhaust side too, if I want a polished finish on the exhaust side or in the combustion chamber, the worn out drums and rolls work well to speed up that task.
I bought an air die grinder for I think $8 and never used it up until my exhaust on the bike snapped at the header and I had to weld it back up. I used that to clean the welds and man the sucker was fast and very good. All metal couldn't complain what-so-ever. Now on the other hand I bought their "dremel" or rotary tool whatever. Broke that as soon as I started using a bit.I can't even go into a Harbor freight without spending a few hundred bucks on something... lol ... I'm liking their hand tools and some of their air tools as their quality has sky rocketed over the years, but some stuff like the electric powered tools I do find quite underpowered. I got a belt sander from then that stalls anytime I press a piece of wood to the belt at normal sanding pressure, but it'll sand if I got all day to sit there with it... Their wire feed welders are nice too and get the job done, but mine didn't last very long before the wire feed controller went out on it.