While adding a tap tempo/preset mod jack (1/4" TRS) to my TC Nova Modulator, I ended up underestimating the amount of room the jack would need below the upper board. The good news is everything works. The bad news is that I need to move the jack down about 1/4" in order to fit the top PCB to fit correctly in the enclosure. I know that I'll have to extend the jack opening down a bit farther, but I was wondering if there's a type of thin, oblong washer that I could use behind the jack nut to make sure the excess penetration is covered up (mostly for dust, but also for aesthetics). Pics tonight for additional detail. Thanks.