bug report

[mongo222]

Describe the bug
A clear and concise description of what the bug is.LaserGrbl v7.14.0.0
Grbl v1.1f
Wrapper: UsbSerial
Win 11, Home, 10.0.22631.0 (7)
CLR: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\mscorlib.dll 4.8.9282.0 built by: NET481REL1LAST_C

TypeOf exception [System.OverflowException]
Exception message [Value was either too large or too small for an Int32.]
Exception source [mscorlib], thread [Main Thread]
Exception method [Int32 ToInt32(Double)]

----------- stack trace -----------
at System.Convert.ToInt32(Double value)
at LaserGRBL.UserControls.GrblPanel3D.GetRulerStep(Double n) in E:\LaserGRBL\LaserGRBL\UserControls\GrblPanel3D.cs:line 175
at LaserGRBL.UserControls.GrblPanel3D.DrawRulers() in E:\LaserGRBL\LaserGRBL\UserControls\GrblPanel3D.cs:line 578
at LaserGRBL.UserControls.GrblPanel3D.DrawScene() in E:\LaserGRBL\LaserGRBL\UserControls\GrblPanel3D.cs:line 360

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
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Hardware and software configuration (please complete the following information):

• Windows version
• Engraver brand and model
• Grbl version (i.e. 0.9j, 1.1f)
• LaserGRBL version

Additional context
Add any other context about the problem here.