Engine/Transmission (1994 - 1998) annoying stumble

[JKouzez]

lately when i slow down coming to a stop my truck will sometimes stumble and sputter very badly, to the point where it shakes the whole truck. i called piers and spoke to harry he told me to tighten my gov springs a ckick which i did and it made no difference. Some people tell me its the stumble from having 370s with a 160 pump but i have 191 dvs. Im also noticing it tends to do it more as my tank gets lower on fuel which leads me to believe maybe fuel pressure or lift pump let me know what yall think thanks