One thought is that I’m a DIYer, but if you use your drill daily as part of your job, it’s probably got more bits & dust etc. on it that mine ever would, so that could be a problem then.
I never thought of that i rarely do any DIY so my drill is like new i guess if you give it a wipe over and maybe blow through any cooling gaps to get rid of any loose stuff you shouldn't have any problems.
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