intermittent starting

Have a 90 vert that I purchased in October - 76,000 miles. I am having an issue with intermittent starting. I have replaced the battery and alternator with a new 140 amp.The fuel pump and filter were replaced less than 300 miles ago. Computer module replaced (not sure of mileage), new starter at 65,000 miles. Engine turns over but will not fire up consistently. Had the car at a top notch mechanic for three weeks and it fired up every morning, is not throwing any codes. Problem seems to appear when the vehicle has been driven, (have not driven it more than 30 miles at a time), afraid of no start issue. When it does not start, charging the battery overnight seems to remedy the problem. Have tried both keys in case of VAS issue, but same issue with both keys. I and the mechanic are at wits end as to what could be the cause. Any suggestions would be greatly appreciated.

Chris Trautman @ Corvette Assembly Plant 2019

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