on timing rtek reads -5 for leading and -20 for trailing

on the timing gun, the first mark lines up for leading.

for trailing, the mark is nowhere to be seen.

a little help?

 

might not be the right forum for this question, but.... You need to move your timing gun onto the trailing wire to see the trailing timing. If you still cant see it make sure the marks on your pulley are visible with the engine off, you might have some grease or dirt covering it.