It is well worth a try... especially given the information above.
I bought one of the very first Skan units that had rows of LEDs and only gave velocity ... mid 1980s? ... and several years later managed to shoot a couple of LEDs out of it. I bought some the correct size from Maplins (we had one here at the time) and fitted them. Hey ho ... it worked and comparison with the new Skan I had bought showed it to be just as accurate. I keep the old unit for fun and nostalgia.
Cheers, Phil