I do know phone compatibilty is 170-290 Grams, but will an extra 8 grams 'really' effect my DJI Care Refresh and of course, performance. I've an iPhone 14 Pro Max, and with the case/cover, it's now 298g and removing the cover a royal PITA.

Hi there. Thanks for reaching out. The recommended dimensions for a smartphone to be used with the Osmo Mobile 6 would be a width of 67-84 mm, a thickness of 6.9-10 mm, and a weight of 170-290 g. When a phone is wrapped with a case, it should be compatible with the gimbal. Therefore, an extra 8 g would affect its performance. Concerning your question about the effects of it on your DJI Care Refresh plan, we need to clarify first. Are you referring to the "Exclusions" stated under "Terms of Service?" If not, kindly specify or provide the link for reference. Thank you for your understanding and support.