I've only had my UBG-16 installed for about 20 hours. I have the added probes for oil pressure and temp. Everything was working as it should but noticed yesterday that my oil pressure was reading 999 whereas it used to read properly. I took off the cowling today and all probes looked to still be in place with no broken wires. Any other simple fixes that I can look into before I call my A&P to come over?