Kyle -- My RV-12's SV altitude hold function seems to work fine using Van's pre-sets. Might you have an issue (partial blockage, loose connection, etc?) with your static system? -- David
David Heal - Windsor, CA (near Santa Rosa)
EAA #23982 - EAA Technical Counselor and Flight Advisor; CFI - A&I
RV-12 E-LSA #120496 (SV w/ AP and ADS-B) - N124DH flying since March 2014 - 540+ hours (as of Sept 2017)!
through June 2018.