Bob Gollihur's web site depicts two possible mounting points: 1.) Up near the middle of the lower Bout 2.) At about middle of the lower Bout Where do you typically mount these on your bass? Here is my situation- I have a Kolstein Fent. At the lower C-Bout- it measures 9 & 15/16 in. At about the middle of the lower Bout- it measures about 9, possibly 9 & 1/16 (depending on where I measure). Bob's site list two sizes: 1.) "Bass model: 7.8-8.9 inches / 198-228mm 2.) "Extra Deep Bass model: 8.9-10.15 inches / 228mm-258mm" So- I may be in a situation whereby the Bass model might would work near the lower C-Bout and the Extra deep model would likely work at or about middle of the lower Bout, but that neither model would work in both places. As Bob does not allow returns- I would either need to: 1.) Be sure I know which mounting point/model I needed before I ordered. 2.) Order the more expensive "Studio" model that accommodates both bass depths (and guitar). or 3.) Find a US dealer that allows returns (due to it being the incorrect size). Any thoughts or experiences would be appreciated. Thank in advance.