Artifact farming Thunderberry

I’ve been doing quite a bit of farming for high tier artifacts via save scumming. Got my self a Liquid Rock from an acid anomaly and now I’m trying to get a Thunderberry from an electro anomaly.

I got my LR from the Chemical plant anomaly and now I’m in Rostak by the crashed helicopter Electro anomaly and I just cannot get a Thunderberry to spawn.

I’ve been here for 2 hours running in from ~100m from the anomaly on the train tracks and I get about 4 different spawn locations one of them being unreachable spawning inside the helicopter.

About 50% of the time it’ll spawn a chocolate bar but that spawn seems static cause it always appears right in front of the 2 lane ramp.

Anyone know of any other spots for Electros I’m thinking the TB might just not spawn here.