@dooble - James,
I’ve seen this issue, too…I own two V1.4 LimeSDRs (one I purchased from the Early Bird, one I purchased later from another Ham getting out of LimeSDR). The one I purchased from the Ham that had it modified for HF from Crowdsupply and I’m finding that this SDR has poor receive on HF, but strangely it’s good on VHF to SHF but I can clearly see the mod was done (coils were removed that match the transformers for Cell and WiFi). I have to attribute this to ‘cracked balls’ on the 7002 BGA that are allowing better connection at higher frequencies than lower frequencies. And as others have also offered, this is not a first occurrence. One LimeSDR user had his 7002 come completely off the card after it fell off a desk, but there was a heatsink applied, too, that may have also contributed to the shearing that happened on that.
Anyway, it’s just an observation, but I’m seeing it too on my second board, but my first one is bullet-proof…Works like a charm.
73 de Marty, KN0CK