well you shouldn't actually need to ride completley flat based anyways..even just a slight edge is ideal.

buuut me and a buddy go flat based all the time and just point it straight down the mountin to see who can go the fastest and can hold it the longest. it depends on your skill level IMO. but if you really want to ride flat it helps to put most of your weight to the rear. it helps lock in the board more.

 

Did you de-tune your tip and tail?

 

maybe so , but tricks that dont involve rotations require for me to start from flat base
that is my problem mostly , not riding down the mountain.

No i didnt de-tune the board , could that affect so much ?

 

actually I usually take off from jumps for a grab with my weight slightly over my toes.

 

I'm guessing the problem is that you cannot even balance with a stance of 74cm. Unless you're over 7 feet tall. I didn't even know there are board companies that make such wide inserts, unless you drilled your own. That's like 29 inches, maybe that was a typo though? :dunno:

 

the board starts to go sideways or i catch an edge . the problem may be in the shoulders , maybe i point my upper body down the hill , because i dont seem to have this flat base problem when riding switch.

stance width is 64 actually. there was a typo. and i`m 180 tall

 

i have the same exact problem

 

How new to riding are you? This is something from my experience that just take time getting used to.

 

I`ve been riding for 6 years , and this issue is new to me
it started last season and it`s bugging me ever since.
so i blamed it on changing the gear , because before i had this bug i had no trouble hitting rails or jumps .
now i have lost my confidence a little and i want to clear this issue before i start spending money on new gear

 

Your problem is your weight distribution, and upper body rotation. Just like what Snowolf said. Try that. I can garantee you that this will solve your problem. Also, depending on what your riding style is, you'll want to detune your edges if you are planning on doing mainly park.