Where are you getting your scores from? Here at myFICO.com? If so then any lender you speak to should be able to review them and tell you what type of mortgage terms to expect... if they are pushing you to pull your credit, then they aren't the lender for you.
Free Mortgage Advice & Pre-Approvals (FHA, VA, USDA, Fannie, Freddie, Non-Prime, Construction, Renovation/Rehab, Commercial) since 2002
Located in Southern California and lending in all 50 states