# I cant adjust trainer difficulty

**URL:** <https://forums.zwift.com/t/i-cant-adjust-trainer-difficulty/519550>\
**Category:** General Discussion\
**Created:** [December 9, 2020, 10:30pm UTC](https://forums.zwift.com/t/i-cant-adjust-trainer-difficulty/519550 "2020-12-09T22:30:51Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Troy\_Elyard](https://sea2.discourse-cdn.com/gozwift/user_avatar/forums.zwift.com/troy_elyard/32/128505_2.png) [@Troy\_Elyard](https://forums.zwift.com/u/Troy_Elyard)\
**Post date:** [December 9, 2020, 10:30pm UTC](https://forums.zwift.com/t/i-cant-adjust-trainer-difficulty/519550/1 "2020-12-09T22:30:51Z")

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Hi, I just connected a kickr core as a controllable trainer and when I use zwift I run out of gears and can’t get over 35km/h .I tried to adjust the trainer difficulty but there isn’t a slide button to adjust it with. Any help will be appreciated. Thanks

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**Author:** ![Mike\_Rowe1](https://sea2.discourse-cdn.com/gozwift/user_avatar/forums.zwift.com/mike_rowe1/32/530428_2.png) [@Mike\_Rowe1](https://forums.zwift.com/u/Mike_Rowe1)\
**Post date:** [December 9, 2020, 11:24pm UTC](https://forums.zwift.com/t/i-cant-adjust-trainer-difficulty/519550/2 "2020-12-09T23:24:23Z")

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Hey @Troy_Elyard, something must not be paired correctly. What are you using for power? Are you using ANT+ Fec or Bluetooth?