I tried to look up Dr. McCombs as well, and couldn't find anything about his edcuation or accomplishments. I only found references to the ICR website that explain how he enjoys learning about God's love.
If he were a legitimate biochemist, I don't believe he would be at ICR.
B. S. Chemistry, CSULB; Long Beach, CA; Nominated for Phi Beta Kappa; 1973.
Ph.D. Organic Chemistry, UCLA; Westwood, CA 1978.
1978-1999: Principal Research Chemist, Eastman Chemical Company; Kingsport, Tennessee
Heaven forbid anyone work for an Institution that argues for Genesis and God! Here is a list of a few more "crackpot" Creation Scientists: