5단쓰다가6단레일로교체하여5단가방이작아6단섶다리셋가방구입후섶다리랑6단받침틀넣었는데작은거같아요넣기도힘들고ㅠ숫놈조인트삐져나와서자크도안잠겨요이럴땐7단섶다리셋가방을구입해야하나요?아님확장형가방을구입해야하나요?확장형가방은6단섶다리셋가방보다길이가기나요?궁금해요^^