One SB issued by Boeing regarding replacement of old clamps with cushion clamps, states that "record the clamp size before before it is discarded to help select the new clamp size". Does it mean that operators should remove all old clamps and measure their size for preparing parts request before incorporation of the SB? In Material information it states total No.294 cushion clamp BACC10GU(101 thru 109) is required for the incorporation of the SB, but it is not clear how many clamp 101,102....109 is required?