Up Date On My Timing Problem, Its Half Way Fixed

[bigd65]

ok i used a dial back and i did find out what my total is or about, i really couldnt tell with this lite, i will redo when i get a timing tape. well it is about 32* at 3000 rpms with 12 initial. when the engine is cold it dont have any spark knock, not even when the passing gear releases and goes into 4th gear and the load gets harder. the problem is when it is warmed up and driving around then i get into it, it has the spark knock. it dont get hot, the temp gauge is below the 180* mark and yes that is about correct, because i even put a mechanical one into it and read the same thing. i am taking a wild stab here but i am thinking maybe the way i have the fuel line ran maybe is heating the fuel ? it is clamped to the front valve cover bolt (center bolt covers) and the area that is clamped is a steel section of the line. does this sound like it could be heating the fuel up, it looks good this way but it sure can go if that is the problem. i have been working alot lately so i have not had a chance to move it, but was wondering, do yall think that where the line is can be heating the fuel. BTW it is hooked with a steel clamp but rubber coated and its not really think rubber. if that is the problem then i need some better ideas how to run this fuel line.