Changes to assessments, legality of

Utah law states that assessments be "proportionate"...the HOA board is proposing a change to current rules so that that all assessments be made equal. The community (separate residences) is made up of both small (3BR) and large (5-8 BR) homes with corresponding maintenance requirement differences (yards/surrounds) and differing personnel load on common facilities....swimming pool, community center, et cetera. This proposal seems to be at variance with Utah law as well as discriminatory. As an additional complication, the governing CC&/Rs following a merger of three associations calls for using the ratio of bed rooms as a parameter for calculating assessments...however, that procedure has not been implemented, the assessments still remaining the same as before the merger became effective (1 June 2015). This too seems to be a disregard of the law/governing documents. Can injunctive relief be sought to (1)halt the first problem, and (2) require require assessments be redone?