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Hi Gary and welcome to JustAnswer,Thank you for the question and your patience. Should you still need assistance for information purposes only...Initially , re-check the 30A and the 2 X 10A fuses as well as the ignition switch (even if just to completely eliminate them as potential suspects).
Still and on the described symptom of "...fire at plug it starts out strong then gets weak...", proposed preliminary checks (if have not been done and depending on the version & wiring) when attempting to start:
Consider an experiment; i.e. disconnect the blue/yellow & the green/white wires from the CKP sensor. Momentarily / repeatedly touch these freed wires to the terminals of a 1.5 AAA battery. This is to simulate a pulsating low voltage.
There should be spark (ignition ON):