Well, I do a lot of little stuff and this is the first time I've noticed this happening.

Here's more of the same program, only the radius that is tilted on a 45 has the problem.

N1980 G00 Z0.0800

N1990 X-2.8500 Y-1.8000

N2000 G01 Z-0.0080 F4.0

N2010 G17

N2020 G02X-2.8000Y-1.7500I0.0500J0.0000 F6.0

N2030 G01 X-2.7000

N2040 G02Y-1.8500I0.0000J-0.0500

N2050 G01 X-2.7500

N2060 Y-2.4500

N2070 X-1.8500

N2080 Y-2.3000

N2090 G02X-1.7500I0.0500J0.0000

N2100 G01 Y-2.4500

N2110 X-1.5500

N2120 Y-2.2000

N2130 G02X-1.4500I0.0500J0.0000

N2140 G01 Y-2.5000

N2150 G02X-1.5000Y-2.5500I-0.0500J0.0000

N2160 G01 X-2.9000

N2170 G02Y-2.4500I0.0000J0.0500

N2180 G01 X-2.8500

N2190 Y-1.6500

N2200 X-2.6054

N2210 Y-2.3000

N2220 G03X-2.5554Y-2.3500I0.0500J0.0000

N2230 G01 X-2.2000

N2240 G03Y-2.2500I0.0000J0.0500

N2250 G00 Z0.0800

N2260 X-2.8500 Y-2.1000

N2270 G01 Z-0.0080 F4.0

N2280 G02X-2.9500I-0.0500J0.0000 F6.0

N2290 G01 Y-1.6000

N2300 G02X-2.9000Y-1.5500I0.0500J0.0000

N2310 G01 X-1.5000

N2320 G02Y-1.6500I0.0000J-0.0500

N2330 G01 X-2.5054

N2340 Y-2.2500

N2350 X-2.4500

N2360 Y-2.1000

N2370 G02X-2.3500I0.0500J0.0000

N2380 G00 Z0.0800

N2390 X-2.3000 Y-1.8500

N2400 G01 Z-0.0080 F4.0

N2410 G02Y-1.9500I0.0000J-0.0500 F6.0

N2420 G01 X-2.4000

N2430 G02Y-1.8500I0.0000J0.0500

N2440 Y-1.7500I0.0000J0.0500

N2450 G01 X-2.2000

N2460 G02Y-1.8500I0.0000J-0.0500

N2470 G01 X-2.4000

N2480 G00 Z0.0800

N2490 X-1.7000 Y-1.6500

N2500 G01 Z-0.0080 F4.0

N2510 G03Y-1.7500I0.0000J-0.0500 F6.0

N2520 G01 X-1.5500

N2530 Y-1.9500

N2540 X-2.1000

N2550 G03Y-2.0500I0.0000J-0.0500

N2560 G01 X-1.5000

N2570 G03X-1.4500Y-2.0000I0.0000J0.0500

N2580 G01 Y-1.7000

N2590 G03X-1.5000Y-1.6500I-0.0500J0.0000

N2600 G00 Z0.0800

N2610 X-1.9000 Y-1.8500

N2620 G01 Z-0.0080 F4.0

N2630 G02Y-1.7500I0.0000J0.0500 F6.0

N2640 G01 X-1.7000

N2650 G02Y-1.8500I0.0000J-0.0500

N2660 G01 X-1.9000

N2670 X-2.0000

N2680 G03Y-1.9500I0.0000J-0.0500

N2690 G01 X-1.9000

N2700 G03Y-1.8500I0.0000J0.0500

N2710 G00 Z0.0800

N2720 X-2.3000 Y-1.9500

N2730 G01 Z-0.0080 F4.0

N2740 G02X-2.2500Y-2.0000I0.0000J-0.0500 F6.0

N2750 G01 Y-2.1500

N2760 X-2.1207

N2770 X-2.0354 Y-2.0646

N2780 G02X-1.9646Y-2.1354I0.0354J-0.0354

N2790 G01 X-2.0500 Y-2.2207

N2800 Y-2.4000

N2810 G02X-2.1500I-0.0500J0.0000

N2820 G01 Y-2.2500

N2830 X-2.3500

N2840 Y-2.0500

N2850 X-2.4000

N2860 G02Y-1.9500I0.0000J0.0500

N2870 G00 Z0.0800

N2880 X-2.8500 Y-2.3000

N2890 G01 Z-0.0080 F4.0

N2900 G03X-2.9500I-0.0500J0.0000 F6.0

N2910 X-2.8500I0.0500J0.0000

N2920 G00 Z0.0800

N2930 X-2.6500 Y-1.9000

N3080 M5 M9

N3090 G00 x0y0

N3100 M30

Cheers,

Walt