bro you need to chill out lol
If you have made your order already then dont worry you will get it ! 100% !
i dont know if thats true about 70% xray check but realisticly i doubt its that high , imagine having to xray 70% of ALL post comming into and out of the USA it would take forever , id say its more likely to be around 30% ....
GBN do not disclose shipping methods but customs shouldnt be a problem with these guys