Get to know your State’s legislation regarding upkeep on your building, and also your by-laws. Committee folks don’t seem to know much and are able to just make what they think are good, obvious decisions. Points of difference can get settled faster when you point out things you feel don’t match the legislation or your by-laws, and hold firm, get other owners on your side so it’s not seen as just you (with and maybe after you drag your Managers viewpoint into it), but even if it is just you be prepared to let it go if its not a big deal or stand and fight if it is. That will mean presenting paperwork that advises you are taking it beyond committee decision and out to a 3rd party such as an adjudicator. Often then they concede as they are just volunteers having a go so don’t want the exposure for not doing things to a standard and time-frame legislation requires if the concerns are genuine. I’m not a fan of needing to join the committee just to have your rights enforced and I think it can actually work against you if you dont often have issue with most of what goes or or are not up for the groupthink.