# Issues Calibrating with Maslow 4 Attached to Concrete Floor **URL:** \ **Category:** Troubleshooting\ **Tags:** calibration\ **Created:** [March 14, 2024, 7:37pm UTC](https://forums.maslowcnc.com/t/issues-calibrating-with-maslow-4-attached-to-concrete-floor/20201 "2024-03-14T19:37:14Z")\ **Posts on this page:** 1\ **Showing post:** 13
**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\ **Post date:** [March 15, 2024, 5:25pm UTC](https://forums.maslowcnc.com/t/issues-calibrating-with-maslow-4-attached-to-concrete-floor/20201/13 "2024-03-15T17:25:52Z")
Can you give it a try with this version: > [@Interstitial Firmware Releases](https://forums.maslowcnc.com/t/interstitial-firmware-releases/20215): > > Weekly updates aren’t nearly fast enough so we are ending up with different version in different forums threads which is going to lead to confusion. I’m starting this thread as a place to store all of the versions which aren’t full releases so that we can give them all numbers and keep them organized. Starting out this is 0.64.2 which adds separate current thresholds for when retracting the belts after clicking “Retract All” and for taking measurements during the calibration process. Both of t… I think that this should (hopefully) fix your issue. The problem was that the same current threshold was being used when retracting the belts and when taking a measurement so changing the retract belts threshold was also messing with calibration. --- _[View the full topic](https://forums.maslowcnc.com/t/issues-calibrating-with-maslow-4-attached-to-concrete-floor/20201)._