Sort of right BlackHawk 9 (Sid??).
You are correct if you intend to fly these blades as a fixed set for their intended service life. The potential problem you face is when you inevitably have to start to mix the blades due to removing one of these blades for repair and get a "loaner" or another out of stock to try and fly with the remaining 3 x blades in the mean time.
This is the big mistake all operators have been making since Igor and Bell began to swing blades.
Independant painting of blades results in span moment arm migration which in turn will ultimately produce "rogue" blades and prohibit - or at very least make extremely difficult, the interchangeability of blades within a fleet of same type of helicopters........you would have seen this in the UH1 fleet in the RAAF and Oz Army.....plus all other fleet operators. It also manifested itself in Oz BlackHawk fleet around 1995 after about their 2nd R3. It was caused because all the blades had been "touched up" or repainted every R3 without having their span monet arm checked and reset if required.
After the 2nd or 3rd R3, the accumulation of paint migtrated the span moment arm to such an extent, that if a new blade were attempted to be flown with 3 older, in service blades having had at least 1-2 repaints, it was more often than not impossible to get them all to fly together. It resulted in excessive laterals with insufficient dynamic balance authority to correct the lateral out-of-blance.
A common indicator of this problem is excessive flight hours required to successfully dynamically balance your blades eg anything in excess of 3-4 flights (assuming the operator/LAME knows what he is doing). The strongest indicator on your dynamic balance equipment (RADS, CH, ACES, Helitune, etc) is if the correction move line for the laterals begins to move tangential to the origin and indicating that the best (or minimum) level of lateral is still greater than what is acceptable eg greater than 0.1-0.15IPS.
The problem of migrating span moment arm can easily be solved.
For a far greater understanding of this commonly experienced phenomonia (ie "rogue" blades) of migrating span moment arm and how to fix or cure it, visit
www.rwas.com.au......makes for some enlightening reading into balancing rotor blades and some common misconceptions held throughout the industry.
(Besides Sid, Golf Alpha Victor says you can't paint for Sh.t....so I am reliably informed)
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