Undergrad premedical adviser letter after two gap years?

Normally, most schools recommend getting the premedical advisor/committee letter. However, I am taking two gap years and feel that the premed adviser did not know me well and I did not know him well. I also already have other recommendations lined up from my undergrad years and have recommendations from my gap years. Would it look bad if I didn't get a letter from my undergrad premed adviser?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums