sam2 what about bal tigara?
sbeph safek deoraysa is telling you to go somewhere. Going there is the maaseh. therefore the safek is still there after the maaseh Vdoik.
And as you pointed out lhalacha we pasken by tefillin ( in 7 places) and by esrog Biur halacha in 648 ?”? ????? (page 136) that you must go lchumra Upashut dhu hadim hacaha