Rich, I think that you are correct in reference to the earlier HVFs having a lower comb line, in fact, if you lay a straight edge on the picture of HV1, pg 133, It appears that the comb is in line with the bottom of the lower forestock, as apposed to the comb line on HVF 21 which intersects the top of the barrel about halfway between the breech and the entry thimble area. On a side note, I had my gun at the CLA 3 years ago and I showed it to Mike Brooks on the premise that he wouldn't make me go out and pull weeds! His comment was that the hardest thing for most people to get right on HVFs was the buttstock architecture and that I had gotten it right. Made my day!