My engine is dying when I apply the breaks. It goes slowly. When it is cold or warm. It does not matter how hard i press them (ie slamming on). I have a 79 40 with a weber carb. No other engine mods. I have no electrical probelms (right this minute). Batts are fully charged. The breaks are fairly new and in good service. It has only recently been doing this and has only been happening since it has gotten hot. Please help I feel like a douce having to restart after every stop light/sign.