Englishman – the issue of using a sefer to prop up another sefer is a machlokes Taz (he says it is assur) and Magen Avrohom (see below where he says it is ok):
???”? ??”? ???? ????? ???? ??? ??????? ??? ??? ??? ??? ??????? ???? ??? ?? ????? ????? ????? ??”? ???? ???? ??? ?? ???? ????? ???? ?? ???? ??”?, ???”? ???? ???? ???? ??”? ?????? ????? ???? ???”? ??’ ??”? ?”?,