What is recommended when changing strings on my JP7? I was using a 10-65 on my Jp7 for a new song tuned to G, and they're still a little "floppy" as you will. The only gauge I've found to be heavier is https://www.guitarstringsonline.com...r-String-Set--7-String--New-Gauges_p_561.html which is a 74. (jeez) Figured i'd give it a shot.. My question is: what adjustments will be needed ? Truss rod? Is using a heavy string as this actually harmful for the guitar? figured id ask so i know for sure! thanks.