Hi Bill
1. We know it is a standard tool because we had the information the bore has 10 mm undercut.
Yes it is possible that even with that undercut the tool may must be modified.
2. The stone holder we send was the wrong item. The G14A1052SH Holder has a range of 14.2-15.7 mm.
The proper stone holders are G14A1051SH, range 12.7-14.2 mm
Very sorry for this. Unfortunately we cannot take the wrong one back when already modified.
This stoner holders are US items. Prices in US Price List. So you can order in USA or on SAG.
Meanwhile we have a real blind bore tool for this diameter. If you want we can quote.
The only thing is that this tool will not be as ridged as the tool you have now!
Regards
Erwin