hi Steve, i have a hegner saw. its about 10 years old. when i cut close work, for instance a pattern for john 3-16 my blade on top of pattern is on line, but the bottom cut sometimes comes together. in other word there is,nt any wood on the bottom. i,m cutting 1-2 inch baltic birch. no one so far can figure what the problem is. my blade is square to the table,i,m using as much pressure as the clamps can stand. can you help??? john sabo.