I can get tear horizontal by moving rest.Swapped 100 gr for 125 gr on arrows and even tried the next weaker spine no luck still tearing rt and yes fletch tear to the right. But sionce you mentioned knock height will go back and set rest to original setting and adj knock to 1/4 i have it at 1/8" this setting has always worked good on this bow. I am a right handed shooter that has no problem (normally) getting bullet holes with a properly tuned bow.