How about finding a law firm or lawyer that maintains/sponsors an IDP Volume Submitter. Unlikely that a plan would not "fit."
Also, consider the new "qualified" regime in which the IRS will rarely, if ever, "disqualify" a plan for any reason, not the least of which is a document deficiency. At worst, VCP could fix a shortcoming most likely at a fee far less than having a firm "audit" the document, for what that is worth