Professional radiator maintainance, anyone else have to do it?

[Rev]

Seems like every couple of years about this time of year, I have to remove my 4-row radiator from my '66. I take it to a radiator shop and have it "rodded out". This is because the top most orifices are all clogged up with junk from the cooling system. I know that the system is minimal for my engine (see sig), but this seems awfully frequent. Only costs $60.00 with me doing removal/reinstall. Just wondered if anyone else had to do this on weekend drivers?

Rev


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'66 Coupe, 306, windage
tray, TRW flat tops, 351W
heads,pocket ported, 268
CC hydraulic cam, R tip
R's, Edelbrock Performer,
600 CFM Holley vac. secs.,
Mallory Unilite, coil, fuel
pump, Tri-Y headers, 2 1/2 "
custom pipes, 3 chamber
Flows, stock C-4, 3.25
Currie built 8" rear,
March under drive pulleys,
13.97 e.t., 100.1 mph
1/4 mi.