Can be frustrating for sure, I haven't built this one yet (next week) but have built the DOD 440 and loved it....I'm sure that's why.
It looks like the link I posted above still has them.
I was lucky enough to buy a dead DOD 595 for $5 and salvaged 3 VTL5C4/2s, 5 TL022s and 3 vintage knobs. All part of the fun.
1978 Gibson Les Paul Standard, Cherry Sunburst