Advice: There have been lots of posts on this subject, but it's still confusing. I play a Ping Eye 2 iron, blue dot. The clubs are great but I've got to re-shaft and re-grip due to their age. I've been having some back problems lately and I was thinking of adding 3/4" to the shaft lengths just so I could stand a bit more upright at address and swing. Will this small adjustment change the lie angle significantly or am I over-thinking this small modification. Yes, I am aware that the swing weight will increase maybe 2 points or so but that's OK because Ping Eye 2's are a C9, so maybe I'll end up with a D1 (correct ?).