i have tried to tune a 29/70 katera and cannot seem to get it to shoot. timing right now is bottom slightly ahead of the top ..brace 6, a2a is 33.5. 27 in. goldtips 100 gr. i have tuned many vulcans and 2 kateras they all shoot great. cant figure this one out. i see no cam lean and everything seems good but this bow will not shoot consistent.. i droped the poundage and tried a 7595 and the same thing.it tears big noch low and walk back is in line to 50. any suggestions..... tim