Hi, I have tried using WSEC for the first time, it started off well but I have now hit a wall. A bit of background. We have a Matsuura MX330 G-Tech 31i , we run 10 parts on one pallet using one Work Offset (G57), the parts are doweled in position but these positions are not 100% correct nor are the mating faces. So I have opted to use WSEC to try and overcome this issue. I have been able to take the original program and just add WSEC. The program started off fine in the first plane and fine in the second until it came to tapping in the second plane. The first plane has been milled, drilled, and tapped. The second plane has been milled and drilled. Then I have the error. I have tried changing Para 5213 from 2.00 to 0.50. I have started at Z84.131 before the G84 command to give a little more clearance before it starts. Below are my WSEC and Work Offset values and both the new program (WSEC) and the original program (NO WSEC). Any help with this would be greatly appreciated. Thanks Tony G57 X-179.966 Y-175.006 Z-457.085 A0 C344.960 #26040 = -0.0045 (X shift) #26041 = 0.0325 (Y shift) #26042 = -0.0345 (Z shift) #26043 = -0.00467 (A rot) #26044 = -0.00286 (B rot) #26045 = 0.01647 (C rot) WSEC ON N14T14M6(#4-40 UNC HELICOIL HSS STRAIGHT FLUTED) M1 G17 G49 G69 G54.4P0 (WSEC OFF) M132 G57G0A-90.0C90.0(CUBE LEFT) G131 G54.4P4(WSEC ON G57) G68.2X0.0Y0.0Z0.0I90.0J-90.0K0.0 G53.1 M131 M8 G0G90X-65.738Y-130.64 G43Z74.131H14S300M3T1 G95 M80S300 G84G99X-65.738Y-130.64Z61.748R74.131F0.635 X32.052 G80G94 (INDEX OPERATION) Z300.0 G49 G69 G54.4P0 (WSEC OFF) M132 G57G0A-90.0C180.0(CUBE FRONT) G68.2X0.0Y0.0Z0.0I180.0J-90.0K0.0 G53.1 M131 M5 M9 G49 G69 G54.4P0 (WSEC OFF) G0G90G53Z0.0 G0G90G53X-435.0Y-465.0 G65P9866(TOOL BREAK CHECK) G130 M1 NO WSEC N14T14M6(#4-40 UNC HELICOIL HSS STRAIGHT FLUTED) M1 G17 G49 G69 G54.4P0 M132 G57G0A-90.0C90.0(CUBE LEFT) G68.2X0.0Y0.0Z0.0I90.0J-90.0K0.0 G53.1 M131 M8 G0G90X-65.738Y-130.64 G43Z74.131H14S300M3T1 G95 M80S300 G84G99X-65.738Y-130.64Z61.748R74.131F0.635 X32.052 G80G94 (INDEX OPERATION) Z300.0 G49 G69 G54.4P0 M132 G57G0A-90.0C180.0(CUBE FRONT) G68.2X0.0Y0.0Z0.0I180.0J-90.0K0.0 G53.1 M131 M5 M9 G49 G69 G54.4P0 G0G90G53Z0.0 G0G90G53X-435.0Y-465.0 G65P9866(TOOL BREAK CHECK) G130 M1