after several landing attempts, i understood my aft gears were not aligned :/ also tail fin and poor battery made the plane quite uncontrollable right after touch down.. so, i decided a cruiser MK3 was needed added sharp tail fin with elevon, radial battery and nose intake (tail intake removed). also moved the wings to the bottom of the fuselage and placed the gears in the proper way.. this time i flight tested it a few times JEB ready for take off halfway and plenty of fuel this time! (probes on bottom right of kerbin are the landing beacons/light @ KSC runway safely landed @ KSC!! also, i've landed with a lot of fuel: 101 units.. means a consumption of 299/400, i'd probably start another try with a not fully loaded tank and see if i can decrease the total time a little bit